asp.net 二进制读取文件/图片

1.参数是Byte[]类型，返回值是Image对象:

 public System.Drawing.Image ReturnPhoto(byte[] streamByte)
        {
            System.IO.MemoryStream ms = new System.IO.MemoryStream(streamByte);
            System.Drawing.Image img = System.Drawing.Image.FromStream(ms);
            return img;
        }

2.参数是Byte[] 类型，没有返回值，这是针对asp.net中把图片从输出到网页上(Response.BinaryWrite)

 public void WritePhoto(byte[] streamByte)
        {
            // Response.ContentType 的默认值为默认值为“text/html”
            Response.ContentType = "image/GIF";
            //图片输出的类型有: image/GIF  image/JPEG
            Response.BinaryWrite(streamByte);
        }